HCPL-2533#300 Equivalent & Substitute Parts

Part Overview

The HCPL-2533#300 is a 2-channel optoisolator with transistor output manufactured by Broadcom Limited, rated for 3750Vrms isolation voltage. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. The part operates across -55°C to 100°C and is designed for DC input applications requiring galvanic isolation in 8-DIP Gull Wing surface mount packaging.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-2533#300
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	15% @ 8mA
Turn On / Turn Off Time (Typ)	800ns, 1µs
Output Type	Transistor
Voltage - Output (Max)	7V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.5V
Current - DC Forward (If) (Max)	25 mA
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing
Product Status	Discontinued at DiGi Electronics
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the HCPL-2533#300 is determined by the following critical parameters:

Number of Channels: 2 (all substitutes must maintain dual-channel configuration)
Package / Case: 8-SMD, Gull Wing (physical and electrical compatibility)
Operating Temperature Range: -55°C ~ 100°C (thermal envelope)
Output Type: Transistor (functional output stage)
Input Type: DC (signal type compatibility)
Current - Output / Channel: 8mA (load capability)
Voltage - Isolation: Minimum 3750Vrms (isolation rating requirement)

Substitutes are grouped into two categories based on isolation voltage:

Category A - Direct Isolation Match (3750Vrms): HCPL-2533-300E maintains identical isolation voltage and is the primary direct substitute from Broadcom Limited.

Category B - Higher Isolation Voltage (5300Vrms): SFH6326 series parts from Vishay Semiconductor Opto Division provide enhanced isolation performance while maintaining all other critical parameters. These are suitable where higher isolation margins are acceptable.

Category C - Lower Isolation Voltage (2500Vrms): HCPL2530 and HCPL2531 series parts from onsemi and Fairchild Semiconductor operate at reduced isolation voltage. These are suitable only where application requirements permit lower isolation ratings.

Parameter Comparison

Parameter	HCPL-2533#300	HCPL-2533-300E	HCPL2530S	HCPL2530SD	HCPL2531SDV	SFH6325-X017T	SFH6326-X007	SFH6326-X009	SFH6326-X009T	SFH6326-X017	SFH6326-X017T
Manufacturer	Broadcom Limited	Broadcom Limited	onsemi	Fairchild Semiconductor	Fairchild Semiconductor	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division
Number of Channels	2	2	2	2	2	2	2	2	2	2	2
Voltage - Isolation	3750Vrms	3750Vrms	2500Vrms	2500Vrms	2500Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	15% @ 8mA	15% @ 8mA	7% @ 16mA	7% @ 16mA	19% @ 16mA	7% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA
Turn On / Turn Off Time (Typ)	800ns, 1µs	800ns, 1µs	450ns, 500ns	450ns, 500ns	450ns, 300ns	300ns, 600ns	200ns, 500ns	200ns, 500ns	200ns, 500ns	200ns, 500ns	200ns, 500ns
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	7V	7V	20V	20V	20V	25V	25V	25V	25V	25V	25V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.45V	1.45V	1.45V	1.33V	1.33V	1.33V	1.33V	1.33V	1.33V
Current - DC Forward (If) (Max)	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA	25 mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Product Status	Discontinued at DiGi Electronics	Active	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute - Direct Replacement: HCPL-2533-300E from Broadcom Limited is the direct equivalent. It maintains identical electrical specifications including 3750Vrms isolation voltage, 15% minimum current transfer ratio at 8mA, and 800ns/1µs turn-on/turn-off timing. The part is Active in product status and ROHS3 Compliant, addressing the RoHS non-compliance of the original HCPL-2533#300. Packaging is Tube format with 6000 units in stock.

Secondary Substitutes - Enhanced Isolation: SFH6326 series parts (SFH6326-X007, SFH6326-X009, SFH6326-X009T, SFH6326-X017, SFH6326-X017T) from Vishay Semiconductor Opto Division provide 5300Vrms isolation voltage, exceeding the original 3750Vrms specification. All maintain 2-channel configuration, 8-SMD Gull Wing packaging, and -55°C to 100°C operating range. These parts are Active and ROHS3 Compliant. Faster switching times (200ns turn-on) are available in these variants. Selection between tube and tape & reel packaging options is available.

Alternative Substitutes - Reduced Isolation: HCPL2530S, HCPL2530SD, and HCPL2531SDV operate at 2500Vrms isolation voltage. These are suitable only where application isolation requirements are lower than the original 3750Vrms specification. HCPL2530S is Obsolete; HCPL2530SD and HCPL2531SDV are Active. HCPL2531SDV offers improved current transfer ratio (19% minimum) and faster turn-off time (300ns) compared to HCPL2530 variants.

Frequently Asked Questions (FAQ)

Q: Can HCPL-2533-300E be used as a direct drop-in replacement for HCPL-2533#300?

A: Yes. HCPL-2533-300E maintains identical electrical specifications and 8-SMD Gull Wing packaging. The primary difference is product status (Active vs. Discontinued) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What is the difference between SFH6326-X009 and SFH6326-X009T?

A: Both parts are electrically identical with 5300Vrms isolation, 19% minimum current transfer ratio, and 200ns/500ns switching times. The difference is packaging: SFH6326-X009 is supplied in Tube format, while SFH6326-X009T is supplied in Tape & Reel (TR) format for automated assembly.

Q: Can I use HCPL2530S as a substitute if my application only requires 2500Vrms isolation?

A: HCPL2530S is Obsolete and not recommended for new designs. HCPL2530SD from Fairchild Semiconductor is the Active equivalent at 2500Vrms isolation with 50682 units in stock. However, verify that your application isolation requirements do not exceed 2500Vrms before selecting this substitute.

Q: What are the switching time differences between substitutes?

A: HCPL-2533#300 and HCPL-2533-300E specify 800ns turn-on and 1µs turn-off. HCPL2530 series parts are faster at 450ns/500ns. SFH6326 series parts are fastest at 200ns turn-on and 500ns turn-off. Faster switching may affect circuit behavior in timing-sensitive applications.

Q: Are all substitutes ROHS3 compliant?

A: HCPL-2533-300E and all SFH6326 variants are ROHS3 Compliant. HCPL2530S and HCPL2531SDV are ROHS3 Compliant. HCPL2530SD compliance status is not specified in the provided data. Verify RoHS compliance requirements for your application before final selection.

Q: What is the inventory status of available substitutes?

A: HCPL-2533-300E has 6000 units in stock. HCPL2531SDV has the highest inventory at 99900 units. SFH6326 variants range from 716 to 1764 units. HCPL2530S has 1960 units but is Obsolete. For production quantities, HCPL2531SDV or HCPL-2533-300E offer the best availability.

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